GabyIf advanced extraterrestrial civilizations wanted to find other life in the galaxy, they would likely have set up radio receivers somewhere near their location. Scientists hold this opinion. That is why they have directed their efforts towards searching for signals from aliens in the center of the galaxy.
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According to scientists, the region around the supermassive black hole Sagittarius A* is one of the best places in the Milky Way to send broad, repetitive radio signals to anyone who might be listening. It is here that a group of researchers led by astronomer Akshay Suresh plans to search for “messages” from other civilizations.
The BLIPSS software was specifically designed to search for and amplify signals from the galactic center that may turn out to be messages from other intelligent beings in the universe. As Mr. Suresh explains, this tool will play a crucial role in assisting researchers in their quest for signals from space.
The galactic center is a cluster of various stars and dense clouds of dust and gas. It is much more cluttered compared to other parts of the sky. However, due to the immense concentration of stars, the galactic center has the greatest potential as a direction where one might find an exoplanet suitable for life.
As Mr. Suresh points out, this is one of the best places to search for signals from extraterrestrials. However, there are certain problems and challenges. In the galactic center, there are many natural objects that amplify repetitive radio signals. Therefore, it is significantly difficult to distinguish an artificial signal from the natural “noise” of light.
How do scientists search for messages from aliens in space?
Periodic pulsed beacons can be used as a budget source for transmitting signals over long distances in interstellar space. On Earth, they are typically used in remote radar probing and flight navigation. Advanced technologies allow these beacons to be scaled up so that pulsed signals can be sent much farther.
The principle of operation of BLIPSS is based on a fast convolution algorithm. This mechanism is quite sensitive to the detection and recognition of periodic pulse signals. As is known, scientists previously used it to search for pulsars.
A team of astronomers led by Suresh used the same algorithm, but for a different task. They based their work on data from the galactic center obtained by the SETI Institute during long-term observations with radio telescopes and set the BLIPSS algorithm to capture their radio emissions.
The scientists initially tested it on pulsars. This allowed them to confirm that their software was capable of detecting the types of signals they needed. Then, Suresh’s team narrowed the frequency range, focusing on pulse periods between 11 and 100 seconds.
As a result, the researchers did not find any signals that matched the specified search parameters. However, due to the experiment, they were able to confirm the effectiveness of their methodology. That is why Suresh’s team is confident that they will continue to apply these technologies with different search parameters in the future.
Anyone can search for messages from space.
Astronomer Vishal Gajjar notes that initial research focused primarily on the search for continuous signals. It can now be asserted that a series of pulses is effective as an interstellar communication method over significant distances. Additionally, the research team led by Suresh represents the first comprehensive attempt in history to conduct an in-depth search for these signals.
As noted by the publication Sciencealert The BLIPSS software and research toolkits are publicly available. Therefore, anyone who wishes to feel like a space researcher can conduct their own analysis, searching for evidence of extraterrestrial civilizations in the heart of the Milky Way.
